Dredging-pump



(No Model.) 5 SheetsSheet 2.

J. D. McRAE.

DREDGING PUMP.

Patented July 26, 1892.

WITNESSES VENTOR.

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(NoModeL) 5 sheets-sheen 4.

. J. D. MoRAE.

DREDGING PUMP.

No. 479,765. Patented July 26, 1892.

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A TTORNE Y4 (No Model.) v 5 Sheets-Sheet 5.

J. D. MGRAE.

DREDGING PUMP. No. 479,765. Patented July 26, 1892.

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joint.

UNITED STATES PATENT OFFICE.

JOHN D. MCRAE, OF BALDl/VINSVILLE, NEW YORK.

DREDGlNG-PUMP.

SPECIFICATION forming part of Letters Patent No. 479,765, dated July 26, 1892.

I Application filed January 2, 1892. Serial No. 416,784. (No model.)

To all whom it may concern:

Be it known that I, JOHN D. MORAE, of Baldwinsville, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Dredging-Pumps, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to dredging-pumps, and particularly to the mechanism for shifting the suction-pipe and stirring apparatus and driving the latter.

My object is to produce an improved dredging-pump provided with improved means for shifting the position of the suction-pipe; also,

provided with an improved stirring or agitating apparatus and improved means for shifting it laterally, and also adapted to change its position vertically and to stir, agitate, cut, dig up, and loosen the soil at or adjacent to the mouth of the suction-pipe, so that the pump will suck it up.

My invention consists in the several novel features of construction and operation hereinafter described, and. which are specifically set forth in the claims hereunto annexed. It is constructed as follows, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation of the apparatus. Fig. 2 is a sectional side elevation thereof on line 02 0c in Fig. 1. Fig. 3 is a top plan thereof. Fig. at is a top plan of the turntable and part of the stirring mechanism. Fig. 5 is an elevation of the train of gearing for driving the stirring or cutting mechanism and the intermediate gears and drive-shaft. Fig. 6 is an enlarged front elevation of the pivot- Fig.7 is a top plan of the upper member of this joint detached. Fig. 8 is a front elevation of the lower member thereof and a transverse vertical section of the upper member. Fig. 9 is a top plan of the lower member thereof detached.

A is the pump, of any suitable construction, provided with a flaring or bell-shaped mouth.

13 is the boat, upon which the pump is mounted, and also the support of and mechanism to carry and drive the stirrer and agitator. A horizontal drive-shaft b is'suitably journaled and provided with a drive-gear c and a bevel-gear d, the latter meshing with a like gear 6, secured upon the vertical shaftf, said shaft being provided at its upper end with a large bevel-gear g, with Which the vertical bevel-gear 72 engages, this gear being secured upon the horizontalshaft i, which is provided with the sprocket-gears 7c and the belts m, the drive-shaft n, and the sprockets p thereon. A suitable frame is erected upon the boat, and r is the top thereof, extending across under the gear 9 and throughsvhich the shaft f passes and in which it is journaled. This top can be either secured to its supports or adapted to slide around thereon upon said shaft as a pivot. Upon this top a bracket 3 is secured, arching across over the gear 9 and partially inclosing it. Upon this bracket I erect a post if, surrounded by a sleeve u, said sleeve being provided with lateral arms or wings v on opposite sides, in the top of which the shaft i is journaled.

D is the stirring or cutting apparatus, comprising a frame composed of the side rails 2 2, which are pivoted upon the upper ends of the wings o of the sleeve 11. and suitably connecting cross-bars. The shaft 02 is journaled in these side rails and is provided with sprockets between said rails, over which the belts 3 pass and extend down to and around sprockets upon the shaft 4:, journaled in the lower end of said side rails, and the stirring, cut-ting, or digging arms or bars 5 are secured upon this shaft, being of any form desired suitable for the purpose. The suction-pipe a is connected to said frame adjacent to its lower end, so that its mouth is contiguous to the digger and so that it will rise and fall with the frame.

The means for raising it are not shown, but may be any ordinary rope or tackle-block mechanism. A

' It will be readily seen that the frame can be swung laterally upon said sleeve and post as a pivot without changing the relations of the gears 76, shaft 11, and the sprocket belts, gears, and shafts for driving the stirrers or cutters, such movement simply changing the position of the gear h upon the gear g.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A frame, a stationary vertical post, a

upon a shaft journaled in said frame, and means to rotate said stirrers, in combination.

2. A drive-shaft and gear, a vertical shaft, bevel-gears upon said shaft, engaging with each other, a horizontal shaft, bevel-gears upon the latter and upon said vertical shaft, engaging with each other,'and sprockets upon the horizontal shaft, a frame, a shaft journaled therein and provided with sprocketgears, belting connecting said gearing and leading to and driving a shaft in the lower end of said frame to rotate the stirrers thereon, and a suction-pipe supported by the frame carrying the stirrers, in combination, asset forth. 

